6 Life cycleThe parasite browses on liver tissue for a period of up to 5-6 weeks and eventually finds its way to the bile duct where it matures into an adult and begins to produce eggs.Up to 25,000 eggs per day per fluke can be produced, and in a light infection, up to 500,000 eggs per day can be deposited onto pasture by a single sheep.

8 Pathology and clinical symptoms.Most of the damage results from worms are migrating through the liver parenchyma feeding on liver cells and bloodWorms in the bile ducts cause inflammation and edemThe triad of fever, hepatomegaly, and eosinophilia.Symptoms and signs are associated with biliary obstructionAcute epigastric pain, and jaundice are common.

9 diagnosisLaboratory diagnosis: finding large operculated eggs in the feces.

16 Clinical features Laboratory diagnosis:Most infections are light and asymptomatic. In heavier infections, symptoms include diarrhea, abdominal pain, fever, ascites, and intestinal obstruction.Laboratory diagnosis:operculated eggs and some times the adults are found in the feces.